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CVE-2021-47664— Enumeration of valid user names

Quick assessment

Affected
Franka Robotics Franka Emika Robot
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Franka Emika Robot是德国Franka公司的一款机器人。 Franka Emika Robot存在安全漏洞，该漏洞源于身份验证机制不当，未经验证的远程攻击者可枚举有效用户名。

CVSS 5.3 · Medium EPSS 0.39% · P32

Possible ATT&CK Techniques 1 AI

T1087 · Account Discovery
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I. Basic Information for CVE-2021-47664

Vulnerability Information
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Vulnerability Title
Enumeration of valid user names
Source: CVE Program / CVE List V5
Vulnerability Description
Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Franka Emika Robot 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Franka Emika Robot是德国Franka公司的一款机器人。 Franka Emika Robot存在安全漏洞，该漏洞源于身份验证机制不当，未经验证的远程攻击者可枚举有效用户名。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Franka Robotics Franka Emika Robot 0.0.0 ~ 4.0.3 -

II. Public POCs for CVE-2021-47664

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III. Intelligence Information for CVE-2021-47664

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News Coverage for CVE-2021-47664 (1)

Same Patch Batch · Franka Robotics · 2025-04-24 · 3 CVEs total

CVE-2021-47663 8.1 HIGH Improper session handling
CVE-2021-47662 7.5 HIGH Unauthenticated remote shutdown of the cobot

IV. Related Vulnerabilities

Same product: Franka Emika Robot
Same vendor: Franka Robotics
Same weakness: CWE-203

V. Comments for CVE-2021-47664

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